Valve have announced that they've plugged a hole in the Xbox 360 version of their popular zombie shooter Left 4 Dead:

Valve has released a server-side fix to deny the recently reported cheats on all dedicated Left 4 Dead Xbox 360 servers. The fix is designed to halt the cheating behavior on the dedicated servers, which accounts for the majority of the co-op and Versus modes of play. A title update for those playing on user-hosted servers and/or via system link will be released in the coming days.

Anyone playing the Xbox 360 version able to comment on how much of a big deal this has been for them?